Question

A long straight wire AB carries a current I.A proton P travels with a speed v, parallel to the wire at a distance d from it in a direction opposite to tye current as shown ib in the figure . What is the force experienced by the proton and what is its direction.

Answer 1

Answer:

The proton travels at speed of v parallel to the wire at a distance d from it.

Magnetic field due to the wire at the distacne d is given by:

b = μ0I2πd in vertically downward direction

Force the proton

F = qVBsin90

F = evμ0I/2πd     in the right direction with respect to the observer.

Answer 2

Answer:

MO(MEU NOT)/4PI×I/A

Explanation: